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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.render.afp;
-
- import java.awt.Rectangle;
- import java.awt.color.ColorSpace;
- import java.io.IOException;
- import java.io.InputStream;
-
- import org.apache.commons.io.IOUtils;
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
-
- import org.apache.xmlgraphics.image.loader.Image;
- import org.apache.xmlgraphics.image.loader.ImageFlavor;
- import org.apache.xmlgraphics.image.loader.ImageSize;
- import org.apache.xmlgraphics.image.loader.impl.ImageRawJPEG;
- import org.apache.xmlgraphics.image.loader.impl.JPEGConstants;
- import org.apache.xmlgraphics.util.MimeConstants;
-
- import org.apache.fop.afp.AFPDataObjectInfo;
- import org.apache.fop.afp.AFPImageObjectInfo;
- import org.apache.fop.afp.AFPObjectAreaInfo;
- import org.apache.fop.afp.AFPPaintingState;
- import org.apache.fop.afp.AFPResourceInfo;
- import org.apache.fop.afp.AFPResourceManager;
- import org.apache.fop.afp.ioca.ImageContent;
- import org.apache.fop.afp.modca.ResourceObject;
- import org.apache.fop.render.ImageHandler;
- import org.apache.fop.render.RenderingContext;
-
- /**
- * {@link ImageHandler} implementation which handles ImageRawJPEG instances. JPEG data is
- * embedded directly (not decoded) into IOCA images (FS11 or FS45).
- */
- public class AFPImageHandlerRawJPEG extends AFPImageHandler implements ImageHandler {
-
- /** logging instance */
- private final Log log = LogFactory.getLog(AFPImageHandlerRawJPEG.class);
-
- private void setDefaultResourceLevel(AFPImageObjectInfo imageObjectInfo,
- AFPResourceManager resourceManager) {
- AFPResourceInfo resourceInfo = imageObjectInfo.getResourceInfo();
- if (!resourceInfo.levelChanged()) {
- resourceInfo.setLevel(resourceManager.getResourceLevelDefaults()
- .getDefaultResourceLevel(ResourceObject.TYPE_IMAGE));
- }
- }
-
- /** {@inheritDoc} */
- @Override
- protected AFPDataObjectInfo createDataObjectInfo() {
- return new AFPImageObjectInfo();
- }
-
- /** {@inheritDoc} */
- public int getPriority() {
- return 150;
- }
-
- /** {@inheritDoc} */
- public Class<?> getSupportedImageClass() {
- return ImageRawJPEG.class;
- }
-
- /** {@inheritDoc} */
- public ImageFlavor[] getSupportedImageFlavors() {
- return new ImageFlavor[] {ImageFlavor.RAW_JPEG};
- }
-
- /** {@inheritDoc} */
- public void handleImage(RenderingContext context, Image image, Rectangle pos)
- throws IOException {
- AFPRenderingContext afpContext = (AFPRenderingContext)context;
-
- AFPDataObjectInfo info = createDataObjectInfo();
- assert (info instanceof AFPImageObjectInfo);
- AFPImageObjectInfo imageObjectInfo = (AFPImageObjectInfo) info;
- AFPPaintingState paintingState = afpContext.getPaintingState();
-
- // set resource information
- imageObjectInfo.setResourceInfo(createResourceInformation(
- image.getInfo().getOriginalURI(),
- afpContext.getForeignAttributes()));
- setDefaultResourceLevel(imageObjectInfo, afpContext.getResourceManager());
-
- // Positioning
- imageObjectInfo.setObjectAreaInfo(createObjectAreaInfo(paintingState, pos));
- updateIntrinsicSize(imageObjectInfo, paintingState, image.getSize());
-
- // Image content
- ImageRawJPEG jpeg = (ImageRawJPEG)image;
- imageObjectInfo.setCompression(ImageContent.COMPID_JPEG);
- ColorSpace cs = jpeg.getColorSpace();
- switch (cs.getType()) {
- case ColorSpace.TYPE_GRAY:
- imageObjectInfo.setMimeType(MimeConstants.MIME_AFP_IOCA_FS11);
- imageObjectInfo.setColor(false);
- imageObjectInfo.setBitsPerPixel(8);
- break;
- case ColorSpace.TYPE_RGB:
- imageObjectInfo.setMimeType(MimeConstants.MIME_AFP_IOCA_FS11);
- imageObjectInfo.setColor(true);
- imageObjectInfo.setBitsPerPixel(24);
- break;
- case ColorSpace.TYPE_CMYK:
- imageObjectInfo.setMimeType(MimeConstants.MIME_AFP_IOCA_FS45);
- imageObjectInfo.setColor(true);
- imageObjectInfo.setBitsPerPixel(32);
- break;
- default:
- throw new IllegalStateException(
- "Color space of JPEG image not supported: " + cs);
- }
-
- boolean included = afpContext.getResourceManager().tryIncludeObject(imageObjectInfo);
- if (!included) {
- log.debug("Embedding undecoded JPEG as IOCA image...");
- InputStream inputStream = jpeg.createInputStream();
- try {
- imageObjectInfo.setData(IOUtils.toByteArray(inputStream));
- } finally {
- IOUtils.closeQuietly(inputStream);
- }
-
- // Create image
- afpContext.getResourceManager().createObject(imageObjectInfo);
- }
- }
-
- private void updateIntrinsicSize(AFPImageObjectInfo imageObjectInfo,
- AFPPaintingState paintingState, ImageSize targetSize) {
- //Update image object info
- imageObjectInfo.setDataHeightRes((int)Math.round(
- targetSize.getDpiHorizontal() * 10));
- imageObjectInfo.setDataWidthRes((int)Math.round(
- targetSize.getDpiVertical() * 10));
- imageObjectInfo.setDataHeight(targetSize.getHeightPx());
- imageObjectInfo.setDataWidth(targetSize.getWidthPx());
-
- // set object area info
- int resolution = paintingState.getResolution();
- AFPObjectAreaInfo objectAreaInfo = imageObjectInfo.getObjectAreaInfo();
- objectAreaInfo.setResolution(resolution);
- }
-
- /** {@inheritDoc} */
- public boolean isCompatible(RenderingContext targetContext, Image image) {
- if (!(targetContext instanceof AFPRenderingContext)) {
- return false; //AFP-specific image handler
- }
- AFPRenderingContext context = (AFPRenderingContext)targetContext;
- AFPPaintingState paintingState = context.getPaintingState();
- if (!paintingState.canEmbedJpeg()) {
- return false;
- }
- if (paintingState.getBitsPerPixel() < 8) {
- return false; //This would stand in the way of dithering and cause exceptions
- }
- if (image == null) {
- return true; //Don't know the image format, yet
- }
- if (image instanceof ImageRawJPEG) {
- ImageRawJPEG jpeg = (ImageRawJPEG)image;
- ColorSpace cs = jpeg.getColorSpace();
- switch (cs.getType()) {
- case ColorSpace.TYPE_GRAY:
- case ColorSpace.TYPE_RGB:
- //ok
- break;
- case ColorSpace.TYPE_CMYK:
- if (!paintingState.isCMYKImagesSupported()) {
- return false; //CMYK is disabled
- //Note: you may need to disable this image handler through configuration
- //if you want to paint a CMYK JPEG on 24bit and less configurations.
- }
- break;
- default:
- return false; //not supported
- }
-
- if (jpeg.getSOFType() != JPEGConstants.SOF0) {
- return false; //We'll let only baseline DCT through.
- }
- return true;
- }
- return false;
- }
-
- }
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